by ivideosoft.com Absolute Video Splitter Joiner is the best video splitting,joining tool. It can split AVI/DIVX, MPEG1, MPEG2, WMV/ASF to small pieces with precise time location, or join video files to a large one, in spite of source format and target format.
by Aone Software Ultra Video Converter is a powerful video tool to convert AVI, DivX, XviD, MPEG, DAT, WMV, ASF, RM, RMVB, MOV, QT ,MP4, M4V, 3GP to AVI, MPEG, VCD, DVD, WMV formats.